Google has POG ("Plain Old Google"). Google Video, Google Images, Google Scholar, and numerous others. Is there a "Google Audio", or something similar, that will index downloadable MP3 and other audio files?
I've just started looking into this, and not many such files seem to appear in basic POG (note: I'm after things like seminar talks and lectures, much more than music files).
[And apologies if this is not the right NG for this query, but it seems telecom related, and I'm not sure where else to go.]